I was faced with a firewall denying access to the outside world using ssh. All I had was http/https access via a proxy server which required authentication. I had an Ubuntu jump host outside the network connected to the internet with a free 443 port. I tried accessing that …

To keep an ssh connection with a tunnel for port forwarding  up reliably we can use the autossh command by Carson Harding. If the connection drops, autossh will restart it. Here's a quick recipe to forward local port 33306 to a remote MySQL host listening on port 3306:

# Install autossh …

First, make sure you can use public key authentication or similar means to connect to ssh servers without typing in your password all the time.

Install sshfs for mounting remote filesystems over ssh, and afuse for automounting FUSE filesystems (sshfs uses fuse).

sudo apt-get install sshfs afuse

For dead connection …

First, create a key-pair with ssh-keygen. This is a one-time operation.

ssh-keygen -t dsa

It is good practice to enter a good password, but you may also leave the password empty. That will leave your private key vulnerable to local attacks, but if you need to login somewhere from a …

Ths SSH protocol supports tunneling arbitrary ports from your local host to a remote network that is only reachable through a remote gateway machine. The typical situation is that you have a, say, web server in a network which is only accessible from inside the network. If you have an …

An SSH server can be handy on a Windows machine, too. Cygwin comes with OpenSSH, and provides a lot of useful tools which you can use over the SSH connection. Here's how to install Cygwin and OpenSSH server on a Windows machine.

Install Cygwin. Make sure you also install OpenSSH …